package apiday02;

public class IntegerDemo {
    public static void main(String[] args) {
        Integer i = 5;
        int a = i;
        System.out.println(i);
        System.out.println(a);
        double d = Double.MAX_VALUE;
        double dd = Double.MIN_VALUE;
        System.out.println(d);
        System.out.println(dd);
        String str = "123";
        double ddd = Double.parseDouble(str);
        System.out.println(ddd);
    }
}
